Hughes "retro fit" lifter not pumping up!

I took mine to the shop and used a rubber tip blower to see if I came up with similar results as Mullinax95...similar but not the same. There was 1 where the airflow was reduced quite a bit but still moved a good amount of air. It seemed as though some had more flow than others so it looks like there are varying machining tolerances. I'm gonna run em...If I don't like em I'm gonna jerk em and go solid like I mentioned earlier.